Astronomy quiz question: G5 supergiant vs. B5 main-sequence star

Astronomy 210 Quiz 5, spring semester 2017
Cuesta College, San Luis Obispo, CA

A G5 supergiant has a ___________ than a B5 main-sequence star.
(A) hotter temperature.
(B) brighter luminosity.
(C) larger size.
(D) (Two of the above choices.)
(E) (All of the above choices.)
(F) (None of the above choices.)

Correct answer (highlight to unhide): (D)

An H-R diagram is provided with this quiz.


These stars are plotted on an H-R diagram below. While the G5 supergiant has a brighter luminosity and a larger size, it has a cooler temperature than the G0 giant.


Section 30674
Exam code: quiz05ne0W
(A) : 0 students
(B) : 2 students
(C) : 0 students
(D) : 18 students
(E) : 2 students
(F) : 0 students

Success level: 82% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.40

Section 30676
Exam code: quiz05s4Ha
(A) : 0 students
(B) : 7 students
(C) : 5 students
(D) : 27 students
(E) : 2 students
(F) : 0 students

Success level: 68% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.82